Stop-motion for looms.



L. S. CANNON & J. M. HOLLADAY.

STOP MOTION FOR LOOMS.

APYLIOATION FILED JUNE 7, 1912.

1,099,423. Patented June 9,1914.

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WITNESSES:

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COLUMBIA PLANOGMPH COuWASHINGTOhh 04 c.

L. S. CANNON & J. M. HOLLADAY.

STOP MOTION FOR LOOMS.

APPLIOATION FILED JUNE '7, 1912.

1,099,423, Patented June 9, 1914.

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WITNESSES INVENTORS,

COLUMBIA PLANOGRAYII CO..WASIIINOTON. u. c.

WEI? PATENT OFFFOE;

LOUIS S. CANNON, 0F ROSEMARY. NORTH CAROLINA, AND JOHN M. HOLLADAY, OF

HOLLADAY, VIRGINIA, ASSIGNORS TOROSEMARY MANUFAGTURIN G COMPANY, OF

ROANOKE RAPIDS, NORTH CAROLINA, A CORPORATIONOF NORTH CAROLINA.

STOP-MOTION FOR LOOMS.

Specification of Letters Patent.

Application filed June '7, 1912. Serial No. 702,182.

To all whom itmag concern Be it known that we, LOUIS S. (lumen, of Rosemary, in the county of Halifax, State of North Carolina,,and. JOHN M. HOL- LADAY, of Holladay, in the countyof Spotsylvania, State of Virginia, citizens of the United States, have invented a Stop-Motion for Looms, of which the. following is a full and complete specification.

Our invention is an improvement in step motions for looms, and isapplicable more especially to that type of loom commonly known as a Jacquard loom, in which connected pattern-cards control the operation of the horizontal wires or needles.

The primary object of our present invention is to provide a simple construction of mechanical devices which will operate quickly and positively to release the shipper-lever in case the operative pattern-card is not properlyengaged and centered by the pins on the revolving drum over which the connected pattern-cards are moved successively in position with respect to the wires or needles.

Other objects and advantages of our invention will hereinafter appear inthe specifications, and what we claim as new and desire to secure by Letters-Patent is specifically set forth in the appended claims.

In the accompanying drawings, which form a part of this specification: Figure 1 is an elevation, showing so much of a J acquard loom as will illustrate the application of our invention thereto. Fig. 2 is an end view of the mechanism for releasing the shipper-lever. Fig. 3 is a plan view of Fig. 2. Fig. at is a detail view of a type of pattern-card commonly used with a Jacquard loom. Fig. 5 is a side elevation illustrating a modification of the mechanism for operating the shipper-lever. Fig; 6 is an end view of said modification, and Fig. 7 is a plan view of the same.

Our invention is applied in connection with the usual shipper-lever 10, rocker-arm 11 on a horizontal shaft 12, drum 13, connected pattern-cards 14: passing over the drum, and horizontal lift-bars or knives 15 for the vertical wires hereinafter referred to; all the parts just mentioned being common in the prevailing type of Jacquard loom.

The shipper-lever 10 is attached to the lower part of the upright or post 16 of the frame, and passes upward alongside of said post and through a slot 17 in the projecting portion of a plate 18 attached to the upper end of the aforesaid post, the slot communicating at one end with an offset recess 17", in which the shipper-lever is held when the loom is operating under normal conditions. As will be understood, the shipper-lever is operated or released by pushing it out of the recess 17 into the slot 17 and in order to accomplish this in a simple and effective manner, through the instrumentality of the governing wires, hereinafter described, we provide at one side of the upright 16a vertical shaft 19, having at its upper end a tripping-arm 20, engaging the lever, and at its lower end an operating-arm 21. As shown in Figs. 1 and 2 this shaft is supported in upper and lower bearing-brackets 22 and 23, respectively, the collar 20 from which the tripping-arm projects bearln r upon the upper side of the bracket 22, and the collar 21, from which the operatingarm projects, engaging the under side. of the bracket 23, to properly support the shaft and permit it to have a turning motion.

livotally mounted at one end upon the operating-arm 21 are levers 24 and 25, each having near its free end a catch-portion, as 24 and 25, respectively, adapted to c06per ate with a plate 26 on the rocker-arm 11,. so that the motion of the rocker-arm will be imparted to the lovers when the latter or any of them remain in the lowermost position.

These lovers are normally raised each pick out of the path of the plate 26 by threads 27, whichpass through the compart board,or a suitable guide, as 28, and for a single-lift jacquard are attached to vertical wires or hooks 29 and 30, one for each lever. In a double-lift jacquard these threads 27 are attached to the tail-cords or neck cords of each hook-pair where they join with the harness,

as will be understood. The vertical wires 29 and 30 pass through notches or offsets in.

the horizontal governing wires or needles 31 and 32, respectively, so that the lateral movement of the vertical wires with relation to the lift-bar or knife 15 will depend upon 1 the longitudinal movement of said governingwires or needles, the vertical wires be- 1 ing provided at their upper ends with hooks 29 and 30, respectively, with which the lift- Patented J nine 9, 1914..

dles may remain in their normal position,

under normal conditions, and thereby permit the lift-bar or knife to engage the vertical wires and lift them at each pick of the loom, each pattern-card is provided with perforations 34 at opposite ends (see 4) one for each horizontal gOVQTIHHg WHeOP:

needle. These perforations are locatedon the pattern-card in line with the horizontal governing wires or needles, when said pat, tern-card is properly centered on the drum,: so that said wires or needles will pass 1nto the perforations and allow the vertical wires 29 and 30 to remain in position to be en-- gaged by the lift-bar or knife. Under these.

conditions each needle is said to be indi- On this operation thecated by the card. lift-bar or knife will lift the wires 29' and 30, and said wires being connected to the levers 24 and 25, by means of the threads 27 will lift the levers out of the path of the plate 26 on the rocker-arm 11. On the other;

hand, should one of the governing wires or needle not be indicated by the card, or in other words fail to pass into its perforation in the pattern-card, by reason of the misplaced position of said pattern-card, or the derangement of some part of the mechanism for positioning the card, the Vertical wire carried by that governing wire or needle would not be engaged by the lift-bar or knife, inasmuch as the wire and hook thereof would be pushed out of the path of the lift-bar or knife, and the lever controlled by said vertical wire remainingin its lowermost position would be engaged and moved by the rocker-arm l1 and plate 26, thus turning the shaft 19 and releasing the shipper-lever, stopping the loom. By this arrangement, as will be seen, the operative pattern-card must be properly positioned on the drum, and the drum must be in proper position for if the perforations 34 are not in exact alinement with the governing wires or needles the latter will be pushed to the right by the pattern-card and out of the path of the lift-bar or knife, as stated above.

In the pattern-card shown in Fig. 4 the large perforations or holes 35 at the center of each end are engaged by the pins 36 on the drums, to center the cards, as usual, and the perforations 37 near the ends of the card, and at the center thereof, are the usual lacing holes. 1 7

As shown in the modification, Figs. 5, 6, and 7 instead of employing a turning-shaft to operate the shipper-lever we may use. a pivoted bar 38, said bar having a short tripping-arm 39 at its upper end and an operating-arm 40 at its lower end, and is pivoted to one side of the upright or post 16 by a bolt or screw 41, said bolt or screw being preferably located a slight. distance above the center of the bar This swinging bar or lever 38 is located on the same side of the upright as the shipper-lever 10, and the lower portion thereof is bent outward, as

shownin Fig. 5, so that the operating-arm 40 will clear the upright. As will be readily noted this form of tripping means for the shipper-lever is simpler than the'turning shaft shown in Figs. 1,2and 3, and can be more easily applied. 1 The bar or lever 38,

and the arms at the ends thereof, are preferably cast in one piece, the outer end of the operating-arm40 being tapped to receive the bolt 42 upon which thelevers 24and 25 are pivotally mounted. In Figs. 5, 6 and 7 the'device is shown with four levers mounted on the arm 40, the idea being to connect each of said levers to a difi'erent hook in the jacquard so that the loom will be stopped unless all four corresponding needles indicate properly. i This arrangement is desirable in cases where more than one set of pattern cards is used, two"- stop needles being usually provided for each pattern series. 7

Obviously any desired number of needles may be connected so as to effect a stopping of the loom should any one of the needles fail to be indicated. I WVhile we prefer and show special needles to control the stop mechanism, these are not necessary as any jacquard needle will serve the purpose. Stop needles are not, however, used to control any part of the loom harness.

' From the above description it will be apparent that our device will operate to stop the loom for any one of a variety of causes. For example if the card becomesslightly misplaced, due to overrunning the guide pin,

or due to wear of the holes or pins, or due to the loss of a pin from the cylinder, the

loom Will be stopped. Similarly if the series of cards winds aroundthe cylinder as frequently happens, the loom will be stopped. The Wear or displacement of the bearings supporting the cylinder will effect a stopping of the loom. In fact practically any derangement of the jacquard mechanism which affects its action in presenting the pattern cards will bring about a stopping action because the stop mechanism is normally in operative relation with amoving part of the loom and is periodically rendered inoperative through the proper presentation of the cards and the correct indication of the needles. A failure to indicate a stop needle is all that is necessary to initiatea stopping action.

Having described our invention, we claim:

1. The combination of a loom; a jacquard in operative relation therewith, an automatic stop motion for the loom; operative connection between a jacquard needle and said stop motion adapted upon the indication of said needle to maintain said stop motion inoperative throughout the ensuing pick; and a series of jacquard cards adapted to indicate said needle at each pick.

2. The combination of 1a loom; a jacquard in operative relation therewith; a stop mechanism for the loom; actuating means adapted to actuate said stop 1 mechanism periodically; a control device o-peratively connected with a needle of the jacquard and adapted upon the indication of said needle to prevent the actuation of said stop mechanism by said actuating means; and aseries of jacquard cards adapted to indicate said needle periodicallyin time with the periodic operation of said actuatingmeans.

3. The combination of a loom; a jacquard in operative relation therewith; a stop mechanism for the loom; actuating means adapted to actuate said stop mechanism periodically; a control device operatively connected with a plurality of jacquard needles and adapted upon the simultaneous indication of all said needles to prevent the actuation of said stop mechanism by said actuating means; and a series of jacquard cards adapted to indicate said needles simultaneously and periodically in time with the periodic operationof said actuating means.

4. The combination of a loom; a jacquard in operative relation therewith; a stop mechanism for the loom; actuating means adapted to actuate said stop mechanism periodically, once each pick; a control device operatively connected with a needle of the jacquard and adapted upon the indication of said needle to prevent the actuation of said stop mechanism by said actuating means; and a series of jacquard cards adapted to indicate said needle every pick.

5. The combination of a loom; a jacquard in operative relation therewith and having a special needle spaced from the regular needles thereof; a stop mechanism for the loom; actuating means adapted to actuate said step mechanism periodically; a control a said needle periodically in time with the pe-v riodic operation of said actuatingmeans.

6. The combination of a loom; a jacquard i in operative relation therewith; an automatic stop motion for the loom normally in operative relation to stop the loom; and an operative connection between said st0p:m0 tion and said jacquard adapted to maintain said stop motion inoperative throughout the ensuing pick upon the correct presentation of a jacquard card.

7. The combination of a loom; a jacquard in operative relation therewith; a stop mechanism for the loom; an actuating means releasably connected with said stop mechanism and adapted to actuate the same periodically; operative connections between a needle of the jacquard and said actuating means adapted upon the indication of said needle to release temporarily the connection between said actuating means and said stop mechanism; and a series of jacquard cards adapted toindicate said needle periodically in time with the periodic operation of said actuating means.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

LOUIS S. CANNON. J NO. M. HOLLADAY.

\Vitnesses for Louis S. Cannon:

O. A. WYoI-m, W. L. MANNING.

Witnesses for John M. Holladay:

W. S.DUVALL, H. S. BEALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.? 

